28416280

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{17327}}^1$

素因数の和:17379

約数の個数: 32

約数和(自身を含む): 65499840

約数和(自身を除く): 37083560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 17327, 34654, 69308, 86635, 138616, 173270, 346540, 693080, 710407, 1420814, 2841628, 3552035, 5683256, 7104070, 14208140, 28416280]

約数ペア:

[(1, 28416280), (2, 14208140), (4, 7104070), (5, 5683256), (8, 3552035), (10, 2841628), (20, 1420814), (40, 710407), (41, 693080), (82, 346540), (164, 173270), (205, 138616), (328, 86635), (410, 69308), (820, 34654), (1640, 17327)]